---
id: CVE-2025-13937
title: >-
  Improper Neutralization of Input During Web Page Generation (XSS or
  'Cross-site Scripting') vulnerability in WatchGuard Fireware OS (ConnectWise
  Technology Integration module) allows Stored XSS.
summary: >-
  Improper Neutralization of Input During Web Page Generation (XSS or
  'Cross-site Scripting') vulnerability in WatchGuard Fireware OS (ConnectWise
  Technology Integration module) allows Stored XSS.
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: watchguard
product: fireware
affected:
  - 'fireware >= 2025.1, < 2025.1.3'
  - 'fireware >= 12.0.0, < 12.11.5'
  - 'fireware >= 12.5, < 12.5.14'
patched:
  - fireware 12.5.14
published: '2025-12-04'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T23:10:00.463'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-13937'
references:
  - url: 'https://psirt.watchguard.com/CVE-2025-13937'
    label: 5d1c2695-1a31-4499-88ae-e847036fd7e3
  - url: 'https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00022'
    label: 5d1c2695-1a31-4499-88ae-e847036fd7e3
tags:
  - nvd
epss: 0.00198
epssPercentile: 0.08467
ingestedAt: '2026-09-25T23:21:16.881Z'
---

## Overview

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS (ConnectWise Technology Integration module) allows Stored XSS.

## Affected

- `fireware >= 2025.1, < 2025.1.3`
- `fireware >= 12.0.0, < 12.11.5`
- `fireware >= 12.5, < 12.5.14`

## Remediation

Upgrade past the affected range:

- `fireware 12.5.14`